The BD Diesel Garrett GT3788VA Turbo Exchange with Vane Position Sensor (848212-9001S) is a premium replacement turbocharger designed specifically for 2004–2010 GM Duramax diesel engines, including LLY, LBZ, and LMM variants. Engineered for direct fitment, this turbo features advanced variable geometry technology that improves throttle response, enhances power delivery, and increases overall efficiency. The included vane position sensor ensures precise control of the turbo vanes, optimizing performance and emissions. Ideal for both stock and lightly modified applications, this turbocharger is a reliable upgrade or replacement solution for restoring factory performance or supporting mild performance enhancements in your Duramax-powered vehicle.